[PATCH] First stage of call lowering for Mips fast-isel

[Eric Christopher]

Testcases?

Also:

================
Comment at: lib/Target/Mips/MipsFastISel.cpp:183
@@ +182,3 @@
+
+bool (*UnusedMipsFastISel1)(unsigned int, llvm::MVT, llvm::MVT,
+                            CCValAssign::LocInfo, ISD::ArgFlagsTy,
----------------
Eh? What's with all of these?

http://reviews.llvm.org/D5714